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ive got an astra mk5 1.4 and im going to put an induction kit on it(k&n 57i) do they actually give any extra power apart from the noise cheers

3 Answers

nope
some people say they can feel a difference, but i think it's just psychological
one thing that may be worth noting is that, while the engine may breath a little easer and sound throatier, due to the KnN filters being oil soaked to aid their filtration properties, this oil coats the AFM sensor which ultimately causes it to fail and stop your engine from working properly... just food for thought ;)
you're better off going for a cotton filer that doesn't take oil

Im looking to improve the performance of my rebuilt 1990 1.4 vauxhall astra mk 2, It has a non standard exhaust, twin webber carbs and a k&n buscuit tin air filter, I recently changed the plugs and I ...

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